One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,4,8,11)(5,9,13,14)(10,12,15,16)(17,18)(19,27)(20,24)(21,26)(22,32)(23,25)(28,29)(30,31)(35,41)(39,46)(42,44)(47,48)(2,7)(4,11)(9,14)(12,16)(17,19,23,20)(18,24,25,27)(21,28,32,30)(22,29,26,31)(33,34)(35,39)(36,43)(37,38)(40,45)(41,46)(42,48)(44,47)(5,13)(9,14)(10,15)(12,16)(18,25)(22,26)(24,27)(29,31)(34,38)(39,46)(40,43)(47,48) involution — undirected(1,3)(2,4)(5,10)(6,8)(7,11)(9,12)(13,15)(14,16)(17,20,23,19)(18,24,25,27)(21,28,32,30)(22,31,26,29)(33,35)(34,39)(36,44)(37,41)(38,46)(40,48)(42,45)(43,47)(1,4)(2,8)(3,7)(5,12)(6,11)(9,15)(10,14)(13,16)(17,21)(18,26)(19,28)(20,30)(22,25)(23,32)(24,31)(27,29)(33,36)(34,40)(35,42)(37,45)(38,43)(39,47)(41,44)(46,48) involution — undirected(1,5,6,13)(2,9,7,14)(3,10,8,15)(4,12,11,16)(17,22,23,26)(18,21,25,32)(19,29,20,31)(24,28,27,30)(33,34)(35,39)(36,40)(37,38)(41,46)(42,47)(43,45)(44,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.